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WO1988000867A1 - Machine a couler en grappe et procede d'utilisation de ladite machine - Google Patents

Machine a couler en grappe et procede d'utilisation de ladite machine Download PDF

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Publication number
WO1988000867A1
WO1988000867A1 PCT/US1986/001615 US8601615W WO8800867A1 WO 1988000867 A1 WO1988000867 A1 WO 1988000867A1 US 8601615 W US8601615 W US 8601615W WO 8800867 A1 WO8800867 A1 WO 8800867A1
Authority
WO
WIPO (PCT)
Prior art keywords
mold
tubes
cluster
casting
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1986/001615
Other languages
English (en)
Inventor
Cass R. Kurzinski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/US1986/001615 priority Critical patent/WO1988000867A1/fr
Priority to JP61504388A priority patent/JPH01501535A/ja
Publication of WO1988000867A1 publication Critical patent/WO1988000867A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0403—Multiple moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/147—Multi-strand plants

Definitions

  • This invention relates to high temperature metal continuous casting machines in which the mold tubes are cooled with sprayed water or other coolant and are oscill ⁇ ated during a casting operation. More particularly, in accordance with the present invention the molds are grouped together in clusters so that a plurality of strands can be simultaneously cast in an area required for the casting of a single strand in a conventional machine.
  • molten steel is passed through a vertically oriented, • usually curved, copper mold.
  • the mold is typically square shaped, although it may be rectangular in the event steel slabs are to be made.
  • the molten steel passes through the mold its outer shell hardens.
  • the steel strand continues to harden, it is bent through an angle of 90° so that it moves horizontally, and it is subsequently cut into individual billets.
  • the temperature of molten steel is typically 2950° F, although with certain grades the temperature may be as low as 2600 °F.
  • the invention contemplates the casting of any metal or metal alloy whose liquid temp ⁇ erature exceeds 2600 °F.
  • the mold which forms the steel strand contains the liquid steel and provides for its initial solidification, that is, hardening of the outer shell.
  • the solidifying strand is extracted continuously from the bottom of the mold at a rate equal to that of the incoming liquid steel 867
  • the production rate being determined by the time required for the outer shell to harden sufficiently so as to contain the inner core of liquid, solidifying steel.
  • the strand is also oscillated while casting proceeds in order to keep the solidifying strand from sticking to the cooled copper wall and thus ruining the cast product.
  • a conven ⁇ tionally designed casting mold requires a baffle tube arrangement with a water-tight and pressure-tight housing in order to maintain proper heat extraction. This results in a significantly larger sized mold housing and increased weight. The larger and heavier molds thus required neces ⁇ sitate several additional design features in the casting machine.
  • a conventional casting machine can be reconfigured to the invention, immediately resulting in a doubling or tripling of the production capacity of the machine. This is not possible when utilizing a conventional continuous casting mold cooling and oscillating system.
  • the present invention is made possible by utilizing the technology disclosed in United States patents 4,494,594 and 4,483,385, without which desiqn engineers could not reduce the distance betwe ' en strand. centerlines, nor cOuld. they group individual strands together into a single housing to form a casting cluster.
  • a continuous casting machine in accordance with the invention enables the size of the machine to be reduced relative to conventional machines by clustering the strands and also enables the machine around the mold system to be designed so that additional economies of size and equipment can be realized. Accordingly, it is an object of this invention to provide a continuous casting machine in which clusters of
  • Another object of the invention is to provide a continuous casting machine which enables a plurality of strands of metal to be simultaneously cast in an area presently required by conventional technology to cast a single strand.
  • a further object is to provide a continuous casting machine in which a cluster of molds is provided in the machine for simultaneously casting a plurality;- ⁇ f strands "
  • Yet another object is to provide a continuous casting machine inwhich a cluster, of molds is provided in the machine for simultaneously casting- a. plurality of
  • a still further object of the invention is to provide a continuous casting machine in which a cluster of molds
  • individ ⁇ ual spray cooling systems are associated with the individual molds in the cluster for cooling the molds independently of one another.
  • An even further object of the invention is to provide a continuous castinq machine in which a cluster of molds is provided in the machine for simultaneously casting a plurality of strands in the machine, and in which individual oscillating means are connected with individual
  • Another object of the invention is to provide a method of casting strands of metal wherein a plurality of strands are simultaneously cast in a cluster of such strands.
  • a plurality of mold tubes are assembled in a cluster and are mounted in a housing.
  • the mold tubes are spaced from one another and spray means are disposed to direct sprays of a coolant, such as water, against the tubes to cool them and the metal flowing therethrough.
  • the spray means may comprise either a common spray system for cooling all of the mold tubes or a plurality of individual systems for cooling individual tubes.
  • a mold tube oscillating structure is connected with the tubes to oscillate them during a casting operation, and may comprise either a common oscillating structure which is connected with all of the tubes for oscillating them together, or a plurality.of separate oscillating structures connected with individual tubes for oscillating them separately.
  • a cluster of mold tubes are mounted near or at their upper ends in a support plate and extend downwardly therefrom into a housing.
  • the housing is fixed to a stationary support and the support plate on- which the mold tubes are carried is connected to an oscillating means for oscillating the support plate and mold tubes carried thereby.
  • a water supply extends into the housing for supplying coolant to a plurality of spray nozzles spaced around the mold tubes.
  • the spray nozzles may be mounted on spray header pipes supported in the housing, or the housing itself may be formed with passages supplying coolant to the nozzles.
  • a continuous casting machine constructed in accordance with the invention results in an increased production capacity over conventional machines of from about 25% to about 200% and at the same time yields an improved metallurgical -quality of the steel produced because of the reduced casting temperature permitted by the incorporation of the invention.
  • Other advantages, such as reduced weight and space requirements, reduction in energy requirements for operation of the plant, and increased speed of production - including decreased casting time and hence less reoxidation of the steel- clearly demonstrate the significant advance of the invention over the prior art.
  • Figure 1 is a somewhat schematic top plan view of a plurality of continuous casting machines arranged side- by-side in accordance with the prior art
  • Figure 2 is a somewhat schematic side view in elevation of one of the prior art machines of figure 1;
  • Figure 3 is a somewhat schematic top plan view of a plurality of continuous casting machines arranged side- by-side and incorporating clusters of mold tubes in accordance with the invention;
  • Figure 4 is a perspective view of one of the machines of figure 3;
  • Figure 5 is a top plan view similar to figure 3 , showing a large number of mold tubes clustered together;
  • Figure 6 is a fragmentary perspective view of a portion of the machine of figure 3, showing a common mold -7-
  • Figure 7 is a fragmentary perspective view similar to figure 6, showing a plurality of independent mold tube oscillation structures connected with the individual mold tubes for oscillation of them independently of one another;
  • Figure 8 is a somewhat schematic top plan view of a portion of a continuous casting machine for casting slabs of steel, and in which the water supply for the spray nozzles comprises passages built into the housing itself.
  • an ⁇ apparatus in accordance with a first form of the invention is indicated generally at 10 in figure 3 and comprises a '' plurality of mold housings -11, 12 and 13 arranged in side-, by-side relationship and each supporting a plurality of spaced apart mold tubes 14 and 15 therein.
  • a coolant inlet 16 is connected with a spray header system 17 inside each mold housing and spray nozzles 18 are spaced along the headers for spraying a coolant fluid such as water against the outside surfaces of each mold tube.
  • the spray cooling system may include valves 19 and 20 for operating the spray header system 17a for one of the mold tubes 14 independently of the spray header syste 17b- for the other mold tube 15, and an oscillation table 21, as shown in dot-and-dash lines, may be connected with the mold tubes for oscillating them during a casting oper- ation.
  • a system constructed in accordance with the invention can provide a pair of mold tubes 14 and 15 in a mold housing 11, with the mold tubes being spaced apart only 8 to 12 inches, center-to-center, as compared with a center-to-center spacing of 24 to 40 inches in a prior art arrangement as shown in figure 1.
  • a first variation of the invention is shown in figure 4, wherein three mold tubes 22, 23 and 24 are arranged in a mold housing 25 supported on a fixed mounting plate 26.
  • a plurality of spray header pipes and spray nozzles are arranged around the mold tubes for spraying a coolant fluid against the mold tubes in accordance with the teaching in US patent 4,494,594.
  • the mold tubes may be oscillated with a structure like that shown in US patent 4,483,385. Coolant, such as water or the like, is introduced to the spray header system via inlet 27.
  • the three strands of metal cast simultaneously with this structure are shown exiting the apparatus at 28, 29 and 30.
  • a -second variation of the invention is shown at 31 in figure 5, wherein a pair of mold housings 3,2 and 33 are disposed side-by-side and six mold tubes 34, 35, 36, 37, 38 and 39 are supported in spaced apart relationship in each housing.
  • a spray header system 40 is arranged in the housing toconduct a coolant fluid to spray nozzles
  • the oscillation structure comprising a mold tube support plate 43 fixed at or near the upper end of the mold tubes for supporting themold tubes inside the mold housing 25' , with the lower ends of the mold tubes being suspended freely inside the mold housing in alignment with openings 44, 45 and 46 in the bottom wall 47 of the housing.
  • the mold tube support plate 43 is guided on pins 48 at the corners, and is oscillated by means of one or more pneumatic, hydraulic or electric motors 49, 50, etc. connected with the support plate 43.
  • a plurality of spray header pipes 51, 52, etc. extend in the housing in spaced relation to the mold tubes to spray a coolant fluid against the mold tubes to cool the metal therein as taught in US patent 4,494,594.
  • a modification of the mold tube oscillation system is shown at 53 in figure 7, wherein a plurality of individual oscillation structures 53a, 53b, 53c are connected with the individual mold tubes to oscillate them independently of one another.
  • this form of the invention is identical to that shown and described in relation to figure 6.
  • FIG 8 A variation of the invention shown in figure 4 is illustrated in figure 8 at 54.
  • the cluster arrangement of mold tubes is used to cast slabs of metal.
  • large flat rectangularly shaped strands of metal are cast in mold tubes 55, 56 and 57 rangin from about 2 inches by 30 inches up to about 12 inches by 100 inches in cross-sectional dimensions.
  • the slab mold tubes are arranged with their widest faces parallel to one another and spray nozzles 58 are disposed to spray coolant fluid against the faces of the slab molds to cool metal there in.
  • the unique cluster mold of the invention enables a significantly increased production of cast metal in a given amount of space and time, and eliminates the use of baffle tubes and oscillation tables connected with the mold housings as shown at 59 and 60 in figures 1 and 2, depicting prior art arrangements.
  • cooling water inlets 61 and outlets 62 are connected with the baffle tube 59 to circulate coolant around the mold tube 63.
  • a motor 64 is connected through an oscillation arm 65 with the oscillation table 60, to which the mold housing is fixed by hold down bolts 66.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

Un moule en grappe, servant à couler simultanément plusieurs bandes de métal dans une machine à couler en continu, comprend un logement de moule (13) contenant plusieurs tubes de moule séparés (14, 15) disposés parallèlement et de façon espacée les uns par rapport aux autres. Des organes de refroidissement par vaporisation (17, 18) sont disposés autour des tubes du moule, permettant la vaporisation contre eux d'un fluide de refroidissement destiné à refroidir et à solidifier le métal en fusion qui les traverse. Un organe d'oscillation (21) peut éventuellement être relié aux tubes du moule, afin de permettre leur oscillation durant une opération de coulée pour empêcher que le métal coulé ne colle au tube du moule.
PCT/US1986/001615 1986-08-08 1986-08-08 Machine a couler en grappe et procede d'utilisation de ladite machine Ceased WO1988000867A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1986/001615 WO1988000867A1 (fr) 1986-08-08 1986-08-08 Machine a couler en grappe et procede d'utilisation de ladite machine
JP61504388A JPH01501535A (ja) 1986-08-08 1986-08-08 クラスター型鋳造機および鋳造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1986/001615 WO1988000867A1 (fr) 1986-08-08 1986-08-08 Machine a couler en grappe et procede d'utilisation de ladite machine

Publications (1)

Publication Number Publication Date
WO1988000867A1 true WO1988000867A1 (fr) 1988-02-11

Family

ID=22195591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/001615 Ceased WO1988000867A1 (fr) 1986-08-08 1986-08-08 Machine a couler en grappe et procede d'utilisation de ladite machine

Country Status (2)

Country Link
JP (1) JPH01501535A (fr)
WO (1) WO1988000867A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111618260A (zh) * 2019-02-28 2020-09-04 昭和电工株式会社 金属连铸棒的制造方法和制造装置
CN111618261A (zh) * 2019-02-28 2020-09-04 昭和电工株式会社 金属连铸棒的制造方法和制造装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2295041A (en) * 1936-07-27 1942-09-08 Rossi Irving Device for casting endless metal castings
US2683294A (en) * 1949-05-28 1954-07-13 Aluminum Co Of America Metal transfer method and apparatus
US4224977A (en) * 1979-02-06 1980-09-30 Concast Incorporated Mold assembly and method for continuous casting
US4349066A (en) * 1979-04-27 1982-09-14 Concast Ag Method and apparatus for continuous casting of a number of strands
US4483385A (en) * 1981-11-05 1984-11-20 Amb Technology, Inc. System for oscillating mold tube in continuous steel casting machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2295041A (en) * 1936-07-27 1942-09-08 Rossi Irving Device for casting endless metal castings
US2683294A (en) * 1949-05-28 1954-07-13 Aluminum Co Of America Metal transfer method and apparatus
US4224977A (en) * 1979-02-06 1980-09-30 Concast Incorporated Mold assembly and method for continuous casting
US4349066A (en) * 1979-04-27 1982-09-14 Concast Ag Method and apparatus for continuous casting of a number of strands
US4483385A (en) * 1981-11-05 1984-11-20 Amb Technology, Inc. System for oscillating mold tube in continuous steel casting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111618260A (zh) * 2019-02-28 2020-09-04 昭和电工株式会社 金属连铸棒的制造方法和制造装置
CN111618261A (zh) * 2019-02-28 2020-09-04 昭和电工株式会社 金属连铸棒的制造方法和制造装置
US10960462B2 (en) * 2019-02-28 2021-03-30 Showa Denko K.K. Production method and production apparatus of continuously cast metal rod
US10974315B2 (en) * 2019-02-28 2021-04-13 Showa Denko K.K. Production method and production apparatus of continuously cast metal rod
CN111618260B (zh) * 2019-02-28 2023-03-10 昭和电工株式会社 金属连铸棒的制造方法和制造装置
CN111618261B (zh) * 2019-02-28 2023-03-10 昭和电工株式会社 金属连铸棒的制造方法和制造装置

Also Published As

Publication number Publication date
JPH01501535A (ja) 1989-06-01

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